Possible Clues:

• Beethoven overture
• 'Il Trovatore' heroine
• Heroine in Verdi's 'Il Trovatore'
• "Il Trovatore" heroine
• Soprano role in 'Il Trovatore'
• Overture, one of several, alone or in concert
• Girl getting another girl to sign
• Duchess in 'Il Trovatore'
• Overtures made by boy to girl?
• Girl's name; or alone (anag.)